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Proceedings Paper

Survey of light sources for image display systems to achieve brightness with efficient energy
Author(s): Dah Yu Cheng; Li-Min Chen
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Paper Abstract

This paper will review the currently available light sources, and also introduces a new, patented compound orthogonal parabolic reflector to be integrated with the light source, which focuses a relatively large light source into a very small point. The reflector creates a nearly ideal intense point source for all next generation image display systems. The proposed system is not limited by the radiation source whether it is a short arc lamp or a long tungsten filament lamp. Our technologies take the finite size of radiation sources into account to address the common problem for all reflector lamp systems, i.e., intensity and uniformity (dark hole). Successful examples will be shown on how to make the efficient intense light source match the requirements of LCD and DMD display systems. A method for reducing U.V. and I.R. radiation will also be demonstrated.

Paper Details

Date Published: 7 April 1995
PDF: 11 pages
Proc. SPIE 2407, Projection Displays, (7 April 1995); doi: 10.1117/12.205896
Show Author Affiliations
Dah Yu Cheng, Cheng Technology & Services (United States)
Li-Min Chen, Cheng Technology & Services (United States)

Published in SPIE Proceedings Vol. 2407:
Projection Displays
Ming Hsien Wu, Editor(s)

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